Allow unassigned ("anyone") tickets

- Requires a migration

todo/migrations/0003_assignee_optional.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.5 on 2016-04-09 11:11
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('todo', '0002_auto_20150614_2339'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='item',
+            name='assigned_to',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='todo_assigned_to', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

todo/models.py

@@ -23,9 +23,6 @@ class List(models.Model):
     def __str__(self):
         return self.name
 
-    # Custom manager lets us do things like Item.completed_tasks.all()
-    objects = models.Manager()
-
     def incomplete_tasks(self):
         # Count all incomplete tasks on the current list instance
         return Item.objects.filter(list=self, completed=0)
@@ -47,11 +44,11 @@ class Item(models.Model):
     completed = models.BooleanField(default=None)
     completed_date = models.DateField(blank=True, null=True)
     created_by = models.ForeignKey(User, related_name='todo_created_by')
-    assigned_to = models.ForeignKey(User, related_name='todo_assigned_to')
+    assigned_to = models.ForeignKey(User, blank=True, null=True, related_name='todo_assigned_to')
     note = models.TextField(blank=True, null=True)
     priority = models.PositiveIntegerField()
 
-    # Model method: Has due date for an instance of this object passed?
+    # Has due date for an instance of this object passed?
     def overdue_status(self):
         "Returns whether the item's due date has passed or not."
         if self.due_date and datetime.date.today() > self.due_date:

todo/settings.py

@@ -1,10 +1,8 @@
 from django.conf import settings
 from django.contrib.auth.models import User
 
-def missing_defaults():
-	raise AttributeError('django-todo requires settings TODO_DEFAULT_ASSIGNEE and TODO_PUBLIC_SUBMIT_REDIRECT for anonymous ticket submissions.')
 
 STAFF_ONLY = getattr(settings, 'TODO_STAFF_ONLY', False)
 DEFAULT_LIST_ID = getattr(settings, 'TODO_DEFAULT_LIST_ID', 1)
-DEFAULT_ASSIGNEE = getattr(settings, 'TODO_DEFAULT_ASSIGNEE', missing_defaults)
+DEFAULT_ASSIGNEE = getattr(settings, 'TODO_DEFAULT_ASSIGNEE', None)
 PUBLIC_SUBMIT_REDIRECT = getattr(settings, 'TODO_PUBLIC_SUBMIT_REDIRECT', '/')

todo/views.py

@@ -293,9 +293,7 @@ def reorder_tasks(request):
 def external_add(request):
     """
     Allow users who don't have access to the rest of the ticket system to file a ticket in a specific list.
-    This is useful if, for example, a core web team are in a group that can file todos for each other,
-    but you also want students to be able to post trouble tickets to a list just for the sysadmin. This
-    way we don't have to put all users into a group that gives them access to the whole ticket system.
+    Public tickets are unassigned unless settings.DEFAULT_ASSIGNEE exists.
     """
     if request.POST:
         form = AddExternalItemForm(request.POST)
@@ -304,7 +302,8 @@ def external_add(request):
             item = form.save(commit=False)
             item.list_id = settings.DEFAULT_LIST_ID
             item.created_by = request.user
-            item.assigned_to = User.objects.get(username=settings.DEFAULT_ASSIGNEE)
+            if settings.DEFAULT_ASSIGNEE:
+                item.assigned_to = User.objects.get(username=settings.DEFAULT_ASSIGNEE)
             item.save()
 
             email_subject = render_to_string("todo/email/assigned_subject.txt", {'task': item.title})